Alain wanted to visit Legoland, so I plotted a route to Carlsbad that took in La Brea on the way. I was about 13 when Dad came home from a business trip to LA, overflowing with excitement about the tar pits, the dire wolves and the saber tooths, the bison, the sloths and oh my God, the mastodons.

I went looking for that Dad, of course. Young Dad, enthusiastic Dad, the Dad who brought the world to life for me. He isn’t there, what with being dead and all, but he was less not-there than usual. Having Alain with me was part of it. Another part was seeing Oscar Isaac in Hamlet a couple of weeks ago, sitting at his dead father’s feet with his head bowed. I cried for his grief as I’ve been unable to cry for my own.

It’s hard to make fossils, but in the tar pits, the conditions are just right. This display includes less than a tenth of the dire wolf skulls alone. La Brea’s full yield is in the hundreds of thousands. My own tar pits, the darknesses that pull me under, are likewise rich in ice age bone jumbles. My job is to uncover them with care, and to document the shit out of them.